Auto-Addressing Communication Nodes via Power Line Current Sensing
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Solution Overview
Problem
In systems with multiple communication nodes connected via a bus, existing methods for assigning unique addresses to nodes are either manual and error-prone, such as using dip switches, or require pre-configuration, limiting scalability and efficiency.
Innovation Solution
A power line communication system where a master node initiates an auto-addressing process by asking each node to sink a preselected current, measuring current flow using sensors or resistors, and assigning addresses based on measured current, eliminating the need for pre-configured addresses or manual dip switches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If manual addressing methods (dip switches) are used, then addresses can be assigned to communication nodes, but the process is error-prone and requires manual intervention
Solution Approach 1:
The system enables self-addressing where communication nodes automatically assign addresses to themselves by detecting their position on the power line. Each node measures current flow and determines its address based on whether it detects current from previous nodes, eliminating manual intervention while ensuring accurate unique address assignment.
2Adaptability or versatility
If pre-configured addresses are used, then addressing can be performed, but scalability is limited and provisioning effort increases
Solution Approach 1:
The system performs preliminary current flow measurements during the addressing process to establish node positions before final address assignment. By pre-detecting current flow patterns and node positions, the system enables rapid address assignment without requiring time-consuming manual configuration or pre-programming, thus improving scalability and reducing provisioning time.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient and scalable auto-addressing of communication nodes, allowing them to communicate uniquely without manual intervention or pre-configured settings, enhancing system flexibility and reducing provisioning efforts.
Implementation Method 1
measure current, through the current sensor, flowing through the powerline under the each of the plurality of communication nodes
Data Source
AI summary
A system for assigning addresses to a plurality of communication nodes coupled via a power line is disclosed. Each of the plurality of communication nodes includes a current sensor. The plurality of communication nodes includes one master communication node and the master communication node is configured to start an auto-addressing process by asking the each of the plurality of communication nodes to sink a preselect amount of current and measure current, through the current sensor, flowing through the powerline under the each of the plurality of communication nodes. A first communication node in the plurality of communication nodes that does not measure any current flowing under the first communication node is assigned a first address.